Skin exhibits remarkable regional specificity. However, the epigenetic mechanism underlying this process remains elusive. In study, we used avian scalp skin as a model and leveraged finding that tandem 195-bp duplication in intron of HoxC10 causes chicken Crest phenotype. Crested chickens (e.g., Polish chickens) exhibit elongated feathers region comb is minute. Along anterior-posterior midline ...

The review summarizes the production and reproductive performance of indigenous chicken in Ethiopia. Even though total population is high enough (98%) than other exotic crossbreeds, gain from poultry sector still low. Thus, was encountered under free-range systems with low input for sector, which limits profit due to egg production, small size, slow growth rate, late maturity, clutch intensive ...

Vertebrate skin is characterized by its patterned array of appendages, whether feathers, hairs, or scales. In avian skin the distribution of feathers occurs on two distinct spatial levels. Grouping of feathers within discrete tracts, with bare skin lying between the tracts, is termed the macropattern, while the smaller scale periodic spacing between individual feathers is referred to as the mic...

Bacillus thuringiensis subsp. israelensis is the leading biopesticide in world due to its specificity and lack of toxicity. The use Bti still restricted developing countries bioprocess complications high cost production. In present study we have shown that lignocellulosic agro waste residues like rice straw can be used as effective substrates with appropriate chemical treatment methods. We comp...

Cell adhesion molecules (CAMs) may act as regulators of morphogenesis by constraining cell motion, forming borders, and controlling intercellular communications that lead to embryonic induction. This postulated causal role of CAMs in inductive events was tested here in an in vitro system of feather induction. In the developing chicken skin, an ectodermal sheet of epithelium interacts with mesod...

Marek’s disease is a lymphoproliferative disease principally of the domestic chicken known to be caused by herpesvirus i-e oncogenic (serotype 1) strains of Marek’s disease herpesvirus (MDV) that replicates in the lymphoid and epithelial tissues. Pathogenesis is complex, involving cytolytic and latent infection of lymphoid cells and oncogenic transformation of CD4+ T cells in susceptible chicke...

Feathers are complex, branched keratin structures that exhibit a diversity of pigmentation patterns. Feather pigments are transferred into developing feather keratinocytes from pigment cells that migrate into the tubular feather germ from the dermis. Within-feather pigment patterns are determined by differential pigmentation of keratinocytes within independent barb ridges during feather develop...

Dermatophytes can digest keratin and other proteinaceous substrates present in skin and its appendages such as nail, hair, and feather and use it as its sole source of carbon and nitrogen. Proteolytic and keratinolytic activities of dermatophytes have been a subject of interest for several years to understand the pathogenicity of infection. In this study we intend to elucidate the keratinase ac...

An economically-important trait in poultry for which gene identification continues to be a challenge is immune response. The objective of the study was quantitate expression major histocompatibility complex (MHC) class II BLB2 at cytolytic and latent response stages Nigerian indigenous chickens. A total 108 chickens (NIC) were sourced across South-western states Nigeria. The birds inoculated...

A study was undertaken to assess the incidence of Marek’s Disease (MD) in vaccinated flocks. Blood, organ and feather follicle samples were collected from fifteen commercial layer farms in which Marek’s Disease outbreak was occurred even after vaccination with monovalent and bivalent vaccines. Blood samples were screened for serotype 1 specific132bp repeats and lymphocytes from corresponding po...